Noise Levels in The West Side, Eureka, CA | Find Quiet Neighborhoods With Our Sound Map
52 dBA
Average noise across The West Side
Quiet office to normal conversation
679
Residents above the EPA 55 dBA threshold
23% of The West Side residents
70 dBA
Loudest residential point
Highway traffic 50 ft away
This map shows modeled outdoor noise across The West Side at 100-meter resolution, combining road, aviation, and rail sources. Green areas measure below 45 dBA. Orange and red exceed the EPA's 55 dBA outdoor threshold linked to long-term health effects. Use the layer toggles to view each source on its own or all together.
Overall
Road
Rail
Aviation
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
What the numbers sound like
30 dBAWhisper
40 dBASoft rainfall
45 dBAQuiet suburban street at night
50 dBAQuiet office
55 dBAEPA outdoor threshold: light traffic 100 ft away
60 dBANormal conversation an arm's length away
65 dBABusy restaurant
70 dBAHighway traffic 50 ft away
80 dBACity bus interior
Population Above the EPA Outdoor Threshold
The EPA's 55 dBA outdoor reference level is a common benchmark for residential noise exposure, especially for activity interference, annoyance, and long-term community noise concerns. About 679 The West Side residents, or 23.0%, live above that level. By land area, 24.7% of The West Side is above 55 dBA.
Average noise levels for The West Side residents, grouped by direction from the center of The West Side. Southern The West Side carries the highest population-weighted average; Western The West Side carries the lowest. Just 26% of residents in Western The West Side live in blocks above the EPA's 55 dBA threshold, roughly the same as the share in Southern The West Side.
Central The West Side
51.2 dBA · Moderate
Quiet office to normal conversation
14% of people above 55 dBA
QuietLoud
Eastern The West Side
52.0 dBA · Moderate
Quiet office to normal conversation
21% of people above 55 dBA
QuietLoud
Northern The West Side
53.6 dBA · Moderate-loud
Quiet office to normal conversation
36% of people above 55 dBA
QuietLoud
Southern The West Side
54.7 dBA · Moderate-loud
Quiet office to normal conversation
29% of people above 55 dBA
QuietLoud
Western The West Side
49.3 dBA · Mostly quiet
Quiet office
26% of people above 55 dBA
QuietLoud
Southern The West Side sounds about 45% louder than Western The West Side to the human ear, a 5.4 dBA gap. Every 10 dBA roughly doubles perceived loudness. Within any of these directions, two homes a quarter mile apart can still differ by 10 or more dBA depending on how close they sit to a major highway.
How far back from do you need to be?
produces an estimated 70 dBA at its loudest centerline points. Noise drops logarithmically with distance, with the exact rate depending on what's between you and the road. Tree cover, walls, terrain, and pavement type all matter. At roughly a quarter mile back, traffic fades into the noise level of a soft rainfall.
At source
70 dBA
Highway traffic 50 ft away
165 ft
57 dBA
Normal conversation an arm’s length away
330 ft
50 dBA
Quiet office
660 ft
43 dBA
Quiet suburban street at night
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 15% of The West Side sits under tree canopy (about average for neighborhoods) and roughly 61% is impervious surface like pavement and rooftops. Both are folded into the per-place decay rate above. Heavier canopy pulls noise down faster with distance; impervious surfaces slow the drop.
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How Noise Is Distributed Across The West Side
The bar chart below shows the share of The West Side residents in each noise band. About 77% of residents live below the EPA's 55 dBA threshold, and roughly 6% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How The West Side Compares
The West Side sits at the quieter end of the spectrum. Below: how The West Side's average outdoor noise and share of residents above the EPA threshold compare with Old Town, Jacoby Creek, highland-park-eureka-ca, and freshwater-eureka-ca.
Average noise level (dBA)
The West Side's 52.2 dBA pop-weighted average is at the quieter end of the spectrum. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than The West Side because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 23.0% of The West Side residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's in the middle of its peer group. Measured by land area instead, 24.7% of The West Side's footprint sits above 55 dBA, against a California average of 36.0% and a national average of 28.1%.
What This Means if You're Moving to The West Side
Distance from highways matters more than the neighborhood name. Two homes in the same zip code can differ by 20 dBA if one sits 100 meters from and the other 500 meters away. The model captures this at 100-meter resolution, so noise exposure changes block by block.
Tree canopy can help reduce modeled noise exposure. Roughly 15% of The West Side is under tree cover (about average for neighborhoods), and the dominant land cover is medium-intensity developed land. Both are measured from federal USDA Forest Service and USGS satellite imagery at 30-meter resolution. Streets with 60% or higher canopy show 3 to 5 dBA lower noise than comparable streets with bare ground or pavement, which is why the per-place decay rate above already accounts for it.
Sources & Methodology
The BestNeighborhood noise model is calibrated against nearly one million federal ground-truth measurements across four states. Road noise is computed from segment-level federal traffic data and propagated outward using physics-based acoustic decay, with attenuation rates that depend on the surrounding land cover.
All inputs are published federal datasets. Block-level noise is computed by combining road, rail, and aviation sound sources in the energy domain, the same physics used in professional environmental noise assessments. Read the full methodology.
